Question

Define power of lens

Answer 1

POWER OF A LENS is a measure of the convergence or divergence, which a lens introduces in the light falling on it.

or

The power P of a lens is defined as the tangent of the angle by which it convergence or divergence a beam of light falling at unit distant from the optical centre.



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Answer 2

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Power of a lens is the ability to converge or diverge the ray of light falling on it is reciprocal of focal length of the lens.♥️